Gas-pressure-regulating device.



J. J. KERR. GAS PRESSURE BEGULATING DEVICE.

APPLICATION I'ILED'BEPT'. 19, 1912- 1,097,236. Pateflted May 19, 1914.

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al p/oattoznuj UNITED STATES BATENT OFFICE.

JESSE J. KERR, or CLEVELAND, OHIO, nssIeNonro SEMET-SOLVAY COMPANY, or SOLVAY, NEW YORK, A 'CQRPQEATION or PENNSYLVANIA.

GAS-PRESSUBE-REGULATING DEVICE.

Specification of Letters Patent.

Patented May 19, 1914.

Application filed September 19, 1912. Serial N o.721,169.

zen of the United States, residing at Cleve-' land, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Gas-Pressure-Regulating Devices, of which the following is a specification.

As is well known in the operation of retort coke ovens, the gas generated in the ovens passes to a collecting main from which it is drawn off by suction applied by an exhauster. In such operation it is desirable v a practically uniform gas pressure shall be maintained in the ovens and consequently in themain into which thegas is discharged and the pipes through which it passes. Heretofore it has been proposed to eiiect the required regulation of pressure by automatically controlling the speed of operation of the exhauster by means of which the gas is drawn ofi. None of the devices suggested for this purpose, however, have been capable of such delicacy of adjustment and operation as to keep the gas pressure within the narrow range required without the ad- 'dition of other more or less complicated pressure controlling mechanism. s

The object of my improvements is to provide means for utilizing variations in the gas pressure to control the speed of the exhauster with such accuracy and delicacy as to maintain uniform pressure in the mains and ovens without the use of's'uppleme'ntal mechanism for the purpose.

My improvements also include means for automatically stopping the exhauster in case ofa blocking of the gas main or pipes and,

'thuspreventing the heavy suction which would follow such a condition with possible breaking of the seals of the system and consequent accidents.

The invention will be best understood fromthe accompanying drawings, Figure 1 of which is a diagram showing the relative location and connections of the parts; Fig. 2 shows a longitudinal section of the regulating valve and Fig. 3 shows a cross section thereof through the valve body.

Referring to the drawings, A, indicates a gas main, in which constant pressure is to be maintained, and from which gas-is withdrawn by a rotary exhauster, B, operated by an engine, C. In the steam supply pipe,

D, leading to the engine, C, is located a throttle valve, E. The valve, E, consists of a valve body F of suitable material, as cast iron, within which is a hollow fixed body, or

liner, G, containing a sliding valve member, H. The liner, G, and valve member H, are provided with registering ports, g, h,

which, as the valve member H is moved are opened or closed thus giving passage to more or less steam to the engine and accelerating or retarding the movement of the exhauster, B, operated thereby.

The movement of the valve member, H, is efiected by means of a valve stem, I, inclosed within a chamber, which forms an extension of the valve body F, and engaging a guide, 2', and provided with a toothed portion,J,which engages with a rotatably mounted toothed member, K. The toothed member, K, is operatively connected by a series of pivotally connected arms 70, Z, m, n, with the movable section of a small gas holder, L, underneath which gas is admitted by pipe, M, connected with the main A. The pipe, M, is

continued beyond its point of entrance to' the gas holder, L, and at its other end connected to the pipe, A which leads from the main A to the exhauster, B, at a point closely adjacent to the exhauster. A liquid U seal N is included in the pipe M between the gas holder, L, and'the exhauster, B.

The manner of operation is as follows: The gas holder, L, being so set and balanced by the counterweight, W, that the exhauster is running at a speed that will maintain the desired pressure in the gas main under given conditions, upon an increase of pressure in the main the gas holder will rise, opening the valve, E, more widely, thus allowing more steam to pass and increasing the speed of the engine and the exhauster and bringing the gas pressure back to normal. Conversely in case of a fall of pressure in the main the holder L, will descend reducing the effective opening of the valve and reducing the speed I ping theexliauster. In this manner the dangers incident to a blocking of the gas way to the exhauster are avoided.

I do not claim specifically herein the valve construction shown and described above but am about to makethe same the subject of a separate application to be filed as a division hereof.

What I claim as new and desire to secure by Letters Patent is.

In a device for maintaining uniform gas pressure the combination of a gas main, an engine and a steam pipe leadin thereto, an exhauster operated by the englne to draw gas from the main, a gas holder connected with the main, a controlling valve in he steam pipe, means connected with the gas holder for operatin said valve, a pipe leading from the gas ho der to the exhauster and a liquid seal included in said pipe.

In testimony whereof, I have hereunto sub scribed my name, this 26th day of August JESSE J. KERR.

Witnesses:

TALBOT E. PIERCE, CLARKSON A. Conmns. 

